Vehicle brake



July 9, 1929. H WETTE 1,720,307

VEHI CLE BRAKE Filed Sept. 2, 1926 n r l f n l i l Fl-g lll/lll INVENOR- AT'IURNEY .Patented .luly 9, 1.929..

O F F I C E GEORGE H. VINETTE, F DETROIT, MICHIGAN.

VEHICLE BRAKE.

Application filed September 2, 1926.

rll`he present invention relates to vehicle braltcs and more especiallyto external fluid. operated brakes.

Jlunong` the objects ot `the invention is the provision oit a simple andelllective operating mechanism.

Another object is brake operating mechanism which will be constructed ot.tew parts, economical to produce and easy to assemble.

@ther objects will readily occur to those skilled in the art uponret'erence to the vtollowing,l description and accompanying drawings inwhich t- Fig. 1 is a side elevation otl the mechanism with parts insection;

Fig. 2 is a plan view 0l the brake;

Il1 in'. f5 is an end elevation ot a portion of `the mechanism with thedrum and anchor plate in section;

Fig. l-

an enlarged `traginentary view ol a detail of construction.

In the drawings, the anchor plate itor the bralie is indicated at withthe drum at 11 and the brake band at 12.

The ends of the brake band 12 will have secured thereto, as by riveting,extensions 15 and 1G which will be long enough to allow the :tree ends15:L and 1Ga thereo't to pass each other as shown in Ilig. 2. The :treeends 15a and 1Ga will be provided with lateral perl'orated lugs, thepertorations therethrough preterably bein on the center line ot thebrake hand. tending1 through the pert'orations will be the threadedeye-bolts 17 which will be maintained in adjusted position by nutsI 18,one on each side oit lug` ends 15L and 1G, These eyebolts 17 will havetheir adjacent ends drilled `lor the reception oit the ends o't atension spring 19 and through the eyes at the other ends will extend theouter ends of actuating levers 20.

The actuatingl levers 2O are each in the torni,

o't'a bell crank With the outer arm extending laterally and curved sothat `it passes ,trom inside the brake drum 11 through the anchor plate10, in which it has a bearinav as at 21, then curves upwardly andextends over the outside. oiE the drum 11 as shown in Figs. 3 and 4.This curved portion 22 ot the lever 2O will be tapered as shown or atleast will be smaller in lthat portion outside ol bearing' 21 so that itmay be inserted trom the inside ot plate 10 without difficulty. It theplate 10 is of unsuitable material and of insulticientthielniess totarnish a proper hearted :tor the leiter, a bearing luieshing 2li may henr 'erial No. 133,250.

additional bearing tor the lever will preferably be used and this isfurnished by a stirrup member 25 bolted as at 26, or otherwise securedto plate 10 with its bearing:` opening 2'? in proper alignment withbearing 21.

rlhe other arms of levers 2O will extend toward each other as shown andwill be provided with preferably cylindrical ends 31 adapted tocooperate with a. double yoke member 32 formed onthe end of a piston rod33 extending into cylinder 34 through the head 35. rlhe inner end of rod33 will connect with a sui table piston 86 which will pret erably bemade np et a guide plate 36"L and fluid tight cup 36'J of any suitableflexible ma terial such as leather. Beneath the piston 3G the cylinderBil will be provided with a suitable inlet 3T tor lluid which latter maybe lorced in under pressure from any suitable source.

The cylinder head Ll0 is provided with a side bracket port-ion 4:1 bymeans oit which it may be secured as by bolting or riveti ng, holes l2Yfor this purpose being' indicated.

The operation of the device is as follows: In normal release positionarms 30 will be in a position in which the ends 31 are a short distancebelow a line from center to center ol bearings 21 and 27 and in fullyapplied position a short distance above this line. Then fluid is torcedinto the cylinder below the pis ton, arms 3() are moved up and cause theouter ent s of lever 20 to move apart, thereby drawing' together theends oit brake hand 12.

NOW, having described the invention and the preferred ilorm olien'ibodimei'it thereot, it is to be understood that the said invent-ionis not to be limited to the specific details herein described and shownbut only by the scope of the claims which Afollow I claim 1. In a brakemechanism, a drum and a sulriliorting plate at one end thereof, fluidpressure means attached to said plate within the drum, a pair ofbrackets attached to said plate within the drum and pivots mounted onsaid brackets, arms connected to said pivots and connecting' to saidfluid pressure means, said pivots ex tendingy through said plate and outI'ardly and the-n curving back to extend over said drum, a brake bandextending around said drum and having; overlapping extensions providedwith 1perforated lugs at its ends, and links journaled on the ends otsaid pivot extensions and nx-er1 :nljuatahly :tu the tales :tu luna A2.In ax brake( mechanism, a' drinn and a supporting?" plate at one eiidtliref, fluid pressure means attached to said plate' within the drum, apair ot' brackets attaehedto Said plate Within the drum and pivotsmounted on said brackets, arms connected to said pivots and connectingte said Huid pressure means,

said pivots extending` 'through said plate and outwardly and thencurving' hack to extend 10 over said drum, a brake' band extendingGEORGE H. VINETTE.

